Stock Appreciation Rights Activity (Detail) - Stock Appreciation Rights $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Oct. 10, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Balance at beginning of period | shares	29
Number of shares, Rights exercised | shares	(15)
Number of shares, Balance at end of period | shares	14
Weighted Average Grant Date Fair Value outstanding, at beginning of period	$ 8.47
Weighted Average Grant Date Fair Value, Rights exercised	8.30
Weighted Average Grant Date Fair Value outstanding, at end of period	$ 8.67
Outstanding unvested at beginning of period, Aggregate Liability | $	$ 256